S
M
T
W
T
F
S
29
22°
-5°
30
28°
-4°
31
31°
5°
1
32°
9°
2
33°
26°
3
42°
17°
4
37°
29°
5
39°
20°
6
38°
27°
7
34°
29°
8
41°
23°
9
48°
27°
10
45°
24°
11
34°
26°
12
33°
17°
13
39°
22°
14
42°
25°
15
41°
21°
16
38°
20°
17
39°
21°
18
39°
23°
19
37°
20°
20
43°
24°
21
52°
30°
22
44°
26°
23
45°
25°
24
44°
25°
25
45°
24°
26
47°
25°
27
47°
28°
28
48°
32°
29
50°
28°
30
50°
29°
1
52°
30°
2
56°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Peoria
Peoria's April 2026 forecast shows daily high temperatures ranging from 33° to 56°, with overnight lows between 17° and 32°. The average high for April is 44° with an average low of 25°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Peoria. See also: May | June | July.